Method of manufacturing can closures



March 1, 1932, L. HIRSCH ET AL METHOD OF MANUFACTURING CAN CLOSURESFiled April 4, 193

INVENTCRS.

ATTOR IEY Patented Mar. 1, 1932 s'rAT s PATENT OFFICE LEONARD HIBSGH, OFLYNDHURST, AND EDWIN A. HARRISS, OF ORANGE, NEW JERSEY, ASSIGNORS TO R.B. DAVIS COMPANY, OF HOBOKEN, NEW JERSEY, A CORPORATION OF NEW JERSEYMETHOD OF MANUFACTURING CAN CLOSURES Application filed April 4, 1930.Serial No. 441,448.

This invention relates to a novel and improved method of forming a metalclosure for cans, and will be best understood from the followingdescription and the annexed drawings, in which we have shown a selectedway of practicing the invention and in which Fig. 1 is a view partly inelevation and partly in section showing the top of a can having appliedthereto a closure made according to our novel method. 7

Fig. 2 is a section on the same plane as the sectional part of Fig. 1,showing a portion of the closure on an enlarged scale, before attachmentto the can.

Figs. 3, 4, 5 and 6 are views showing successive steps followed inmaking the finished closure.

In Fig. 1 is shown a can 1 having a top 2 to which is applied a sealingmember 3, this sealing member extending across the bottom of a recess 4surrounded by a cylindrical wall 5, and adapted to receive a plug 6. Thetop may be secured to the can by a suitable seam 7.

The top is preferably formed, as shown in Fig. 3, with the cylindricalwall 5, this form being achieved by action of suitable dies upon a blankof sheet metal. Then, the cylindrical wall is flared outwardly, asindicated at 8. The flare which is shown exaggerated in the drawings,has a function which will be described presently.

The sealing member 3 forms the bottom of the recess, and has its edgeportion formed into a circumferential flange 9, so placed as to fit overthe flared out edge portion 8 of. the wall 5. After being placed in theposition shown in Fig. 5, the flange 9 and flared out edge portion 8 aresoldered together, the solder being indicated at 10.

l/Vhen the contents of the can are to be used, the relatively fragibleseal 8 may be punctured and removed, and after some of the contents areremoved, the plug 6 may be replaced to temporarily close the can, it ofcourse being understood that the plug is first removed before puncturingthe sealing member.

We claim The method of manufacturing a can top which comprises formingthe top with a hole flange.

LEONARD HIRSCH. EDI/VIN A. HARRISS.

